CN102839640A - Locking mechanism for self-elevating drilling platform - Google Patents

Locking mechanism for self-elevating drilling platform Download PDF

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Publication number
CN102839640A
CN102839640A CN2012103282462A CN201210328246A CN102839640A CN 102839640 A CN102839640 A CN 102839640A CN 2012103282462 A CN2012103282462 A CN 2012103282462A CN 201210328246 A CN201210328246 A CN 201210328246A CN 102839640 A CN102839640 A CN 102839640A
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China
Prior art keywords
jack
self
rigid frame
drilling platform
tooth piece
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CN2012103282462A
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Chinese (zh)
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CN102839640B (en
Inventor
刘爱永
范会渠
张维磋
唐�谦
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SHANGHAI RICHTECH CO Ltd
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SHANGHAI RICHTECH CO Ltd
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Publication of CN102839640A publication Critical patent/CN102839640A/en
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Abstract

The invention discloses a locking mechanism for self-elevating drilling platform. The locking mechanism includes a pile leg rack and two sets of locking mechanisms symmetrically arranged at two sides of the pile leg rack. A rigid frame is arranged in the self-elevating drilling platform, the pile leg rack vertically penetrates through the rigid frame, each set of locking mechanism includes a toothed block, an upper jack, a lower jack, two horizontal jacks, a horizontal oil cylinder and an inclined oil cylinder, the upper and lower jacks are vertically fixed in the rigid frame and respectively located at the upper and lower sides of the toothed block, the two horizontal jacks are horizontally fixed in the rigid frame and located behind the toothed block, the horizontal oil cylinder is located between the two horizontal jacks and has one end hinged with the toothed block and the other end hinged with the rigid frame, the inclined oil cylinder has one end hinged with the toothed block and the other end hinged with the rigid frame, and the included angle between the axial line of the inclined oil cylinder and the vertical direction is an acute angle. The inventive locking mechanism for self-elevating drilling platform is simple and convenient to operate and high in safety.

Description

The self-elevating drilling platform retaining mechanism
Technical field
The present invention relates to self-elevating drilling platform, be specifically related to the retaining mechanism that a kind of spud leg that is used for self-elevating drilling platform locks.
Background technology
Along with the in-depth of the mankind to the petroleum resources development and use, oil-gas exploration and development changes the ocean over to from land.Therefore, the drilling engineering operation also must be carried out in the vast oceans.When carrying out the oil/gas drilling construction at sea, the rig that the hundreds of ton is heavy will have the space of enough support and placement, the place that also will have the drilling implementer to live and live simultaneously, and offshore drilling platforms has just been shouldered this important task.Because changeable, the marine stormy waves of sea climate and the destruction of bathycurrent, the stability and the safety of offshore drilling unit become more important.
Offshore drilling platform (drilling platform) is the offshore structures that is mainly used in the probing well.Adorn equipment such as drilling well, power, communication, navigation on the platform, and safe life-saving and personnel's living facilities, be that exploratory engineering of off-shore petroleum/gas reservoir is developed indispensable means.Offshore drilling platform mainly is divided into mobile platform and fixed platform two big classes, and wherein, fixed platform can be divided into again: jacket platform, concrete gravity platform, deep water are complied with tower platform etc.Fixed drilling platform is mostly built in the shallow water, and it is to be fixed on the seabed and the no longer mobile device in above tide by jacket, lays the deck above the platform and is used to place drilling equipment.The spud leg of support fixation platform is directly to squeeze into the seabed, so, the good stability of fixed drilling platform, but because of platform can not move, so the cost of drilling well is higher.
For solving the mobility and the deep sea drilling problem of platform, multiple mobile drilling platform has appearred again, mainly comprises: bottom founded rig, self-elevating drilling platform, floating barge, semisubmersible drilling platform, tension leg type platform, the tower platform of guy rope etc.
Self-elevating drilling platform is made up of platform, spud leg and elevating mechanism, and platform can go up and down along spud leg, does not generally have from the boat ability.Spud leg is transferred and is inserted the seabed during work, and platform is raised to the trouble free service height that leaves the sea, and spud leg is carried out precompressed, and spud leg is unlikely when guaranteeing that platform runs into storm sink.The completion rear platform drops to the sea, extracts spud leg and also all mentions, and whole flat floats on the sea, is dragged to new well location by tugboat.Nineteen fifty-three, the U.S. built up first jack-up unit, and this platform is strong to depth of water compliance, and job stability is good, and development is very fast, accounted for 1/2 of portable drilling rig sum.Four pile legs of self-elevating drilling platform " No. one, the Bohai Sea " platform that China makes voluntarily are to be made by the steel pipe of circle, and the height of spud leg has more than 70 meter, and lifting gear is the bolt-type hydraulic control.This type offshore boring island cost is lower, migration property is good, strong to the compliance of sea-floor relief, thereby self-elevating drilling platform is used in Chinese offshore drilling more.
After self-elevating drilling platform arrives the job site; Platform rises to air gap height by jacking system, need platform be fixed, and guarantees that platform can bore completion practice quietly in the height flat of safety; At this moment; The self-elevating drilling platform retaining mechanism begins to play a role, and its main effect is fixed on platform on the spud leg exactly, and the various load of platform are passed to spud leg through retaining mechanism.
China utility model patent 200920211771.X discloses a kind of self lift type engineering platform locking device; Comprise the tooth piece that is meshed with the spud leg tooth bar of engineering platform; This project platform locking device also comprises drawback cylinder, plugging pin oil cylinder, goes up worm and gear jacking device, following worm and gear jacking device and two side worm and gear jacking devices; Said drawback cylinder and said two side worm and gear jacking devices all are arranged on said tooth piece back in the rear side of said spud leg tooth bar, are used to drive said tooth piece along continuous straight runs and move; The piston rod of drawback cylinder links to each other with said tooth piece; Said upward worm and gear jacking device and said worm and gear jacking device down lay respectively at the above and below of tooth piece, are used for the driving gear piece to move in the vertical direction; Said plugging pin oil cylinder is arranged on the side of said tooth piece, is used to stop said tooth piece to tilt to rotate to said spud leg tooth bar direction, and this plugging pin oil cylinder is provided with a latch.In when locking, to guarantee that at first the tooth piece aims at the flute profile of spud leg tooth bar, they can be meshed smoothly.This locking device is that the promotion through upper and lower worm and gear jacking device makes tooth piece and spud leg rack alignment; But there is following problem so at least: the first, after tooth piece and the spud leg rack alignment; Upper and lower worm and gear jacking device forms clamped condition to the tooth piece, can compare difficulty when promoting tooth piece translation and the engagement of spud leg tooth bar with drawback cylinder subsequently; The second, because the tooth piece is being different to punctual horizontal level when meshing; Under this two states; Upper and lower worm and gear jacking device all need clamp the tooth piece, take into account the diverse location of tooth piece, and this causes difficulty for the layout of upper and lower worm and gear jacking device.
Summary of the invention
The technical problem that the present invention will solve be to provide a kind of structure more rationally, handle self-elevating drilling platform retaining mechanism more easily, to overcome the above-mentioned defective of prior art.
In order to solve the problems of the technologies described above; The present invention adopts following technical scheme: a kind of self-elevating drilling platform retaining mechanism; Comprise spud leg tooth bar and the two cover locking mechanisms that are arranged symmetrically in spud leg tooth bar both sides; Be provided with a rigid frame in the said self-elevating drilling platform; The spud leg tooth bar vertically runs through said rigid frame, and every cover locking mechanism comprises that a tooth piece, one go up jack, a following jack, two level jack, a cross cylinder and a dump ram, saidly goes up jack and following jack vertically to be fixed on rigid frame interior and lay respectively at the upper and lower of said tooth piece; Said two level jack are horizontally fixed in the rigid frame and are positioned at the rear of said tooth piece; Said cross cylinder is between two level jack, and an end of cross cylinder and said tooth piece are hinged, and the other end and rigid frame are hinged; Said dump ram is between last jack and level jack, and an end of dump ram and said tooth piece are hinged, and the other end and rigid frame are hinged, and the angle of the axis of dump ram and vertical direction is an acute angle.
Preferably, the front of said tooth piece is provided with locking rack, and the upper surface of tooth piece, soffit and the back side are the plane, and the said back side and upper surface, soffit are perpendicular.
Preferably, said jack, following jack and the level jack of going up is the self-locking hydraulic jack.
Preferably, in the said rigid frame camera is installed also.
Preferably, said rigid frame is a rectangular frame.
Preferably, said rigid frame is provided with the through hole that supplies said spud leg tooth bar vertically to run through, and the said jack of going up is installed in the position near said through hole edge with following jack.
Preferably, when tooth piece and the engagement of spud leg tooth bar, the axis of said dump ram and the angle of vertical direction are 45 °.
Preferably, also comprise hydraulic control system, said upward jack, following jack, level jack, cross cylinder all are connected with hydraulic control system with dump ram.
Self-elevating drilling platform retaining mechanism of the present invention, tooth piece and spud leg tooth bar aim at the engagement action process in, only need the cooperation of cross cylinder and dump ram to accomplish.Each jack just plays clamping action after tooth piece and spud leg tooth bar mesh, need not participate in aiming at and engagement process of tooth piece and spud leg tooth bar.Therefore, compared with prior art, retaining mechanism of the present invention is handled simple more, convenient; Safe, tooth piece and spud leg tooth bar aim at engagement process in, each jack all is in contraction state; Can be to the mobile obstruction that causes of tooth piece, therefore aligning is more prone to; When upper and lower jack stretched out, the tooth piece was fixed (engagement), and this has brought convenience for the layout of upper and lower jack, as long as upper and lower jack is installed in the position near the spud leg tooth bar, need not to take into account the diverse location of tooth piece.Utilize retaining mechanism of the present invention; Offshore boring island is fixed on the spud leg; And the various load of platform are passed to spud leg through retaining mechanism; Can realize that offshore boring island fixes at the above certain distance of the water surface, make offshore boring island when drillng operation, can not receive the influence of ocean stormy waves, promote the operation function of self-elevating drilling platform greatly.
Description of drawings
Fig. 1 is the sketch map of self-elevating drilling platform retaining mechanism of the present invention at releasing orientation.
Fig. 2 is the sketch map of tooth piece among the present invention.
Fig. 3 is the control principle sketch map of self-elevating drilling platform retaining mechanism of the present invention.
View when Fig. 4 is tooth piece and spud leg rack alignment.
View when Fig. 5 is tooth piece and the engagement of spud leg tooth bar.
Fig. 6 is the view of level after clamping.
Fig. 7 is the view after vertically clamping.
Among the figure: 1, retaining mechanism 2, spud leg tooth bar 3, rigid frame
10, tooth piece 11, last jack 12, dump ram
13, level jack 14, cross cylinder 15, camera
16, following jack 30, through hole 101, locking rack
102, upper surface 103, the back side 104, soffit
The specific embodiment
Below in conjunction with the accompanying drawing and the specific embodiment the present invention is done further explain, those skilled in the art can more clearly understand other advantages of the present invention and effect thus.
Need to prove that the structure that Figure of description illustrated, ratio, size etc. only in order to cooperate the specific embodiment, supply those skilled in the art to more clearly understand design of the present invention, are not in order to restriction protection scope of the present invention.The adjustment of the modification of any structure, the change of proportionate relationship or size not influencing under the situation that effect of the present invention and purpose reach, all should still drop within protection scope of the present invention.For the ease of describing, the relative position relation of each parts is to describe according to the Butut mode of Figure of description, as: the position relation of forward and backward, upper and lower, left and right etc. is what to confirm according to the Butut direction of Figure of description.
As shown in Figure 1, self-elevating drilling platform retaining mechanism of the present invention comprises spud leg tooth bar 2, in self-elevating drilling platform, is provided with a rigid frame 3, and rigid frame 3 is preferably rectangular frame, and rigid frame 3 is provided with the through hole 30 that supplies spud leg tooth bar 2 vertically to run through.Arrange two cover locking mechanisms 1 on the bilateral symmetry of spud leg tooth bar 2 ground, every cover locking mechanism comprises that a tooth piece 10, one go up the following jack of jack 11,16, two level jack 13, a cross cylinder 14 and a dump ram 12.
Wherein, last jack 11 vertically relatively is fixed in the rigid frame 3 with following jack 16, and lays respectively at the above and below of tooth piece 10.
Two level jack 13 are horizontally fixed in the rigid frame 3 and are positioned at the rear of said tooth piece 10.
Cross cylinder 14 is between two level jack 13, and the front end of cross cylinder 14 and said tooth piece 10 are hinged, and rear end and rigid frame 3 are hinged, and in the rigid frame 3 the oil cylinder erection support can be set and be hinged in order to the rear end with cross cylinder 14.
Dump ram 12 is between last jack 11 and level jack 13, and the lower end of dump ram 12 also is hinged with said tooth piece 10, and upper end and rigid frame 3 are hinged, and the angle of the axis of dump ram 12 and vertical direction is an acute angle.
Preferably, a camera 15 also is installed in rigid frame 3.
As shown in Figure 2, tooth piece 10 roughly is a rectangular block, is provided with locking rack 101 in the front of tooth piece 10, and the upper surface 102 of tooth piece 10, soffit 104 and the back side 103 are the plane, and the back side 103 and upper surface 102, soffit 104 are perpendicular.
In a preferred embodiment of the invention, said very heavy 13 tops of jack 11, following jack 16 and level of going up are the self-locking hydraulic jack.
As shown in Figure 3; The present invention can comprise a hydraulic control system; Said upper and lower jack, level jack, cross cylinder and dump ram all are connected with hydraulic control system; Hydraulic control system is connected with monitoring system with Hydraulic Station, and the camera in the rigid frame also is connected with monitoring system.
Below in conjunction with Fig. 4-Fig. 7, the locking process of self-elevating drilling platform retaining mechanism of the present invention is described.
As shown in Figure 4, under releasing orientation, 12 actions of hydraulic control system control dump ram, the upper-lower position of adjustment tooth piece 10 makes tooth piece 10 aim at the teeth of spud leg tooth bar 2 are staggered.This can judge according to the realtime graphic that camera 15 is gathered, and in time adjust the angle of dump ram 12.
As shown in Figure 5, when tooth piece 10 with after the teeth of spud leg tooth bar 2 are aimed at, cross cylinder 14 promotes tooth pieces 10 and 2 engagements of spud leg tooth bar.At this moment, the angle of the axis of dump ram 12 and vertical direction is preferably 45 °.
As shown in Figure 6, after tooth piece 10 and spud leg tooth bar 2 meshed, level jack 13 was stretched out earlier, withstood on the back side of tooth piece 10, and along continuous straight runs clamps tooth piece 10 and spud leg tooth bar 2, can not throw off because of the load that receives platform.
As shown in Figure 7, last, upper and lower jack 11,16 stretches out, and just in time withstands on the upper surface and soffit of engagement lower tooth piece 10, and tooth piece 10 is vertically clamped, and plays the effect of support fixation.Therefore, last jack 11 preferably is installed in the position near through hole 30 edges with following jack 16, directly over the tooth piece 10 during just with 2 engagements of spud leg tooth bar and under.So just accomplished the locking of offshore boring island and spud leg, offshore boring island and spud leg are fixed to be one.
When needs make offshore boring island move up and down with respect to spud leg, unclamp retaining mechanism of the present invention earlier.When unclamping, each jack is withdrawal earlier, and cross cylinder 14 shrinks with dump ram 12 then, and tooth piece 10 is pulled back, and breaks away from spud leg tooth bar 2.

Claims (8)

1. self-elevating drilling platform retaining mechanism; Comprise spud leg tooth bar (2) and be arranged symmetrically in two cover locking mechanisms (1) of spud leg tooth bar (2) both sides; It is characterized in that; Be provided with a rigid frame (3) in the said self-elevating drilling platform; Spud leg tooth bar (2) vertically runs through said rigid frame (3); Every cover locking mechanism (1) comprises a tooth piece (10), last jack (11), a following jack (16), two level jack (13), a cross cylinder (14) and a dump ram (12), and said upward jack (11) and following jack (16) vertically are fixed in the rigid frame (3) and lay respectively at the upper and lower of said tooth piece (10); Said two level jack (13) are horizontally fixed in the rigid frame (3) and are positioned at the rear of said tooth piece (10); Said cross cylinder (14) is positioned between two level jack (13), and an end of cross cylinder (14) and said tooth piece (10) are hinged, and the other end and rigid frame (3) are hinged; Said dump ram (12) is positioned between jack (11) and the level jack (13); One end of dump ram (12) and said tooth piece (10) are hinged; The other end and rigid frame (3) are hinged, and the angle of the axis of dump ram (12) and vertical direction is an acute angle.
2. self-elevating drilling platform retaining mechanism according to claim 1; It is characterized in that; The front of said tooth piece (10) is provided with locking rack (101); The upper surface (102) of tooth piece (10), soffit (104) and the back side (103) are the plane, and the said back side (103) and upper surface (102), soffit (104) are perpendicular.
3. self-elevating drilling platform retaining mechanism according to claim 1 is characterized in that, said jack (11), following jack (16) and the level jack (13) of going up is the self-locking hydraulic jack.
4. self-elevating drilling platform retaining mechanism according to claim 1 is characterized in that, a camera (15) also is installed in the said rigid frame (3).
5. self-elevating drilling platform retaining mechanism according to claim 1 is characterized in that, said rigid frame (3) is a rectangular frame.
6. self-elevating drilling platform retaining mechanism according to claim 1; It is characterized in that; Said rigid frame (3) is provided with the through hole (30) that supplies said spud leg tooth bar (2) vertically to run through, and said upward jack (11) and following jack (16) are installed in the position near said through hole (30) edge.
7. self-elevating drilling platform retaining mechanism according to claim 1 is characterized in that, when tooth piece (10) meshed with spud leg tooth bar (2), the axis of said dump ram (12) and the angle of vertical direction were 45 °.
8. self-elevating drilling platform retaining mechanism according to claim 1; It is characterized in that; Also comprise hydraulic control system, said upward jack (11), following jack (16), level jack (13), cross cylinder (14) all are connected with hydraulic control system with dump ram (12).
CN201210328246.2A 2012-09-06 2012-09-06 Locking mechanism for self-elevating drilling platform Active CN102839640B (en)

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Cited By (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN104278663A (en) * 2014-09-18 2015-01-14 武汉船用机械有限责任公司 Locking device for gear and rack ascending and descending system
CN104443294A (en) * 2014-11-05 2015-03-25 华北水利水电大学 Pile and cable combined platform and application method adapting to tidal range changes thereof
CN104743471A (en) * 2013-12-31 2015-07-01 中国石油化工集团公司 Lifting rack random locking mechanism of truss pile leg platform
CN106284268A (en) * 2016-08-11 2017-01-04 武汉船用机械有限责任公司 A kind of pile leg locking mechanism
CN106741697A (en) * 2017-01-06 2017-05-31 上海利策科技股份有限公司 A kind of semisubmersible platform
CN107460860A (en) * 2017-07-31 2017-12-12 中国石油集团渤海石油装备制造有限公司 A kind of electric control gear of marine drilling platform pile leg locking system
CN109457680A (en) * 2018-09-14 2019-03-12 武汉船用机械有限责任公司 A kind of locking device suitable for jack-up unit
CN109678076A (en) * 2019-02-27 2019-04-26 温州易正科技有限公司 A kind of self-locking type hydraulic jack
CN110042818A (en) * 2019-03-01 2019-07-23 武汉船用机械有限责任公司 Offshore wind farm mounting platform
CN110273411A (en) * 2019-04-30 2019-09-24 武汉船用机械有限责任公司 From heave cushion ocean platform
CN112095573A (en) * 2020-08-25 2020-12-18 广东工业大学 Method for driving pile legs to lift and descend by four side cylinders of giant offshore wind turbine installation platform

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JPS60175624A (en) * 1984-02-22 1985-09-09 Mitsui Kaiyo Kaihatsu Kk Wedging device for elevating leg column of off-shore working platform
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CN201649058U (en) * 2010-05-31 2010-11-24 抚州市临川白勇海洋工程有限公司 Self-lifting platform pile leg locking device
CN101915674A (en) * 2010-07-20 2010-12-15 崔锋 Tester of pile leg locking system for self-elevating drilling platform
CN202830903U (en) * 2012-09-06 2013-03-27 上海利策科技股份有限公司 Self-elevating drilling platform locking mechanism

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JPS60175624A (en) * 1984-02-22 1985-09-09 Mitsui Kaiyo Kaihatsu Kk Wedging device for elevating leg column of off-shore working platform
GB2160824A (en) * 1984-05-17 1986-01-02 Mitsui Ocean Dev & Eng Device for locking an off-shore work platform on a leg
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Cited By (14)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN104743471A (en) * 2013-12-31 2015-07-01 中国石油化工集团公司 Lifting rack random locking mechanism of truss pile leg platform
CN104278663B (en) * 2014-09-18 2016-08-24 武汉船用机械有限责任公司 A kind of locking device of gear rack lifting system
CN104278663A (en) * 2014-09-18 2015-01-14 武汉船用机械有限责任公司 Locking device for gear and rack ascending and descending system
CN104443294A (en) * 2014-11-05 2015-03-25 华北水利水电大学 Pile and cable combined platform and application method adapting to tidal range changes thereof
CN106284268B (en) * 2016-08-11 2018-10-02 武汉船用机械有限责任公司 a kind of pile leg locking mechanism
CN106284268A (en) * 2016-08-11 2017-01-04 武汉船用机械有限责任公司 A kind of pile leg locking mechanism
CN106741697A (en) * 2017-01-06 2017-05-31 上海利策科技股份有限公司 A kind of semisubmersible platform
CN107460860A (en) * 2017-07-31 2017-12-12 中国石油集团渤海石油装备制造有限公司 A kind of electric control gear of marine drilling platform pile leg locking system
CN107460860B (en) * 2017-07-31 2021-04-09 中国石油集团渤海石油装备制造有限公司 Electric control device of pile leg locking system of offshore drilling platform
CN109457680A (en) * 2018-09-14 2019-03-12 武汉船用机械有限责任公司 A kind of locking device suitable for jack-up unit
CN109678076A (en) * 2019-02-27 2019-04-26 温州易正科技有限公司 A kind of self-locking type hydraulic jack
CN110042818A (en) * 2019-03-01 2019-07-23 武汉船用机械有限责任公司 Offshore wind farm mounting platform
CN110273411A (en) * 2019-04-30 2019-09-24 武汉船用机械有限责任公司 From heave cushion ocean platform
CN112095573A (en) * 2020-08-25 2020-12-18 广东工业大学 Method for driving pile legs to lift and descend by four side cylinders of giant offshore wind turbine installation platform

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